Acute limb ischaemia in a septic patient with diabetic ketoacidosis / Isquemia aguda de miembros en un paciente septico con cetoacidosis diabetica

This is a patient with septicaemia and diabetic ketoacidosis who developed an acute ischaemic lower limb from an arterial thrombus. The patient had decreased protein S function.

Se trata de un paciente con septicemia y cetoacidosis diabética que desarrolló una isquemia aguda en un miembro inferior a partir de un trombo arterial. El paciente presentaba función disminuida de la proteína S.

HIV seroprevalence among hospital inpatients with neuropsychiatry and other central nervous system disorders / Seroprevalencia del VIH entre pacientes hospitalizados con trastornos neuropsiquiátricos, y otros desórdenes del sistema nervioso central

OBJECTIVE: To determine the seroprevalence of HIV among inpatients with neuropsychiatric and other central nervous system (CNS) disorders at the University Hospital of the West Indies (UHWI). METHODS: Sera and data of hospital inpatients with disorders of the CNS were prospectively investigated and reviewed at the Virology Laboratory, UHWI, over the period January 1 to December 31, 2007. The study population included inpatients with a principal diagnosis of a neuropsychiatric or other CNS disorder and for whom a serological analysis for HIV had been requested. The CNS disorders were categorized as follows: neuropsychiatric disorder (eg schizophrenia), CNS infection (eg viral, bacterial), motor and psychogenic dysfunction not included in other categories (eg seizures), gross structural brain lesion (eg tumours) and other. HIV prevalence rates were calculated and compared according to age, gender and diagnostic category. RESULTS: Eighty-two patients were included. Sixty-one per cent were males and 39% females. The mean age in years (± SD) was 37.6 (± 16.3). There were significant differences in prevalence rates according to diagnostic category (p = 0.026). All of the patients with psychiatric disorders (n = 40) were HIV-negative and 25% (3 out of 12) of patients with CNS infection were HIV-positive. There were no statistically significant associations demonstrated between HIV and age or gender (p > 0.05). CONCLUSION: Clinicians should have a high index of suspicion for HIV infection when faced with patients with CNS infection. Further research is needed to clearly identify the reasons for the comparatively low prevalence of HIV among the psychiatric patients included in this study.

OBJETIVO: Determinar la seroprevalencia de VIH entre pacientes hospitalizados con trastornos neuropsiquiátricos, y otros desórdenes del sistema nervioso central (SNC) en el Hospital Universitario de West Indies (UHWI). MÉTODOS: Los sueros y datos de los pacientes hospitalizados con desórdenes del SNC, fueron investigados y analizados en el Laboratorio de Virologia, UHWI, durante el período comprendido entre el 1ero. de enero al 31 de diciembre de 2007. Lapoblación del estudio incluyópacientes hospitalizados con un diagnóstico principal de trastorno neuropsiquiátrico u otros desórdenes del SNC. A estos pacientes se les habia ordenado un análisis serológico de VIH. Los trastornos del SNC se categorizaron como sigue: trastornos neuropsiquiátricos (p.ej. esquizofrenia), infecciones del SNC (p.ej. virales, bacterianas), disfuncionespsicogénicas y motoras no incluidas en otras categorias (p.ej. ataques), lesiones cerebrales estructurales severas (p.ej. tumores), y otros. Las tasas deprevalencia de VIH fueron calculadas y comparadas de acuerdo con la edad, el género y la categoria de diagnóstico. RESULTADOS: Se incluyeron ochenta y dos pacientes. El sesenta y uno por ciento eran varones y el 39% hembras. La edadpromedio en años (± SD) fue 37.6 (± 16.3). Hubo diferencias significativas en las tasas deprevalencia según la categoria de diagnóstico (p = 0.026). Todos los pacientes con trastornos psiquiátricos (n = 40) fueron VIH negativos y 25% (3 de 12) de los pacientes con infección del SNC fueron VIH positivos. Sin embargo, no se presentaron asociaciones estadisticamente significativas entre el VIHy la edad o el género (p > 0.05). CONCLUSIÓN: Los clínicos deben tener un indice alto de sospecha de infección de VIH frente a los pacientes con infección del SNC. Se requieren más investigaciones a fin de identificar claramente las razones para una prevalencia comparativamenteincluidos en este estudio.

Prospective evaluation and characteristics of patients with suspected primary hyperaldosteronism / Evaluación prospectiva y características de los pacientes con sospecha de hiperaldosteronismo primario

Primary hyperaldosteronism (PH), resulting in hypokalaemic hypertension, may be due to an aldosterone-producing adenoma (APA) or bilateral zona glomerulosa hyperplasia. Six patients with suspected PH were identified at the University Hospital of the West Indies and standardized screening was carried out. Plasma renin activity (PRA) and serum aldosterone concentrations (SAC) were measured, followed by confirmatory intravenous saline suppression test. The patients were all women, of median age 48 years (interquartile range, IQR: 41-51.7 years). They tended to be overweight with suboptimal blood pressure control. Median serum potassium was 3.1 mmol/L (IQR 2.7 - 3.3 mmol/l) and kaliuresis was elevated or inappropriately normal. All individuals had suppressed PRA (< 0.6 ng/ml/hr) and elevated SAC (> 30 ng/dl), with SAC/PRA ratios > 50. Five patients had confirmed PH (ie post-saline SAC > 10 ng/dl); PH could not be definitely excluded in the sixth patient (ie post-saline SAC 5 - 10 ng/dl). Imaging studies revealed normal adrenal glands in one patient, unilateral adrenal enlargement in three patients, and unilateral adrenal masses in two patients. Only one of these latter two patients was shown to have an adrenal adenoma on histological examination. In this series, there appears to be fewer cases of the APA subtype of PH than expected. It remains to be seen whether the distribution of PH subtypes in Jamaica is actually different from elsewhere. This, and the cost-effectiveness of different approaches to screening, identification and management of patients suspected of having PH in Jamaica are areas for further study.

El hiperaldosteronismo primario (HP), que trae como resultado hipertensión hipocalémica, puede tener por causa un adenoma productor de aldosterona (APA) o una hiperplasia bilateral de la zona glomerulosa. Seis pacientes con sospecha de HP fueron identificados en el Hospital Universitario de West Indies, y se llevó a cabo un tamizaje estandarizado. Se realizaron mediciones de la actividad de renina plasmática (ARP) y las concentraciones de aldosterona en suero (CAS), seguidas de una prueba confirmatoria de supresión con salina por vía intravenosa. Los pacientes fueron en su totalidad mujeres, con una edad mediana de 48 años (rango intercuartil, IQR: 41­51.7 años). Tenían tendencia al sobrepreso y un control subóptimo de la presión sanguínea. La mediana de potasio sérico fue 3.1 mmol/L (IQR 2.7­3.3 mmol/l) y la caliuresis fue elevada o inadecuadamente normal. Todos los indi-viduos presentaron ARP suprimida (< 0.6 ng/ml/hr) y CAS elevada (> 30 ng/dl), coproporciones CAS/ARP> 50. A cinco pacientes les fue confirmado HP (ie CAS post-salina > 10 ng/dl); el HP no pudo ser definitivamente excluido en el sexto paciente (ie CAS post-salina 5 ­ 10 ng/dl). Estudios de imagen revelaron glándulas suprarrenales normales en un paciente, agrandamiento suprarrenal unilateral en tres pacientes, y masas suprarrenales unilaterales en dos pacientes. Solamente uno de estos dos últimos pacientes mostró tener un adenoma adrenal al realizarse el examen histológico. En esta serie, parece haber menos casos del subtipo APA de HP que lo esperado. Queda por ver si la distribución de los subtipos de HP en Jamaica es en realidad diferente de la de otras partes. Esto, al igual que el costo-efectividad de los diferentes métodos de tamizaje, identificación y tratamiento de pacientes con sospecha de HP en Jamaica, son áreas que requieren ulterior investigación.

Knowledge, motivation and barriers to diabetes control in adults in Jamaica / Conocimientos, motivación, y obstáculos en relación con el control de la diabetes de adultos en Jamaica

In this descriptive study, individual structured interviews were conducted on a random sample of 35 men and 98 women from a population (n = 510) of clinic patients. Open questions sought to determine the extent of knowledge, motivation and barriers to lifestyle changes for control of diabetes mellitus (DM) in Jamaican adults. These were coded into themes and described. Other data were analysed using SPSS. Men (61.8 +/- 14.8 years) were older than women (54.9 +/- 13.7 years) and demonstrated less knowledge (p = 0.006). The respondents (71%) indicated the need for more education. Barriers to lifestyle changes and glycaemic control included a low education level (64%), inadequate knowledge (80%), lack of perceived risk (80.4%) and lack of self-monitoring (93%). Only 23% were controlled to HbA1c < or = 6.5%. The patients' reference to the physicians as a primary source of information indicated the need for a collaborative team approach, and the incorporation of diabetes education as an indispensable service at this clinic.

En este estudio descriptivo, se realizaron entrevistas estructuradas individuales a una muestra aleatoria de 35 hombres y 98 mujeres de una población (n = 510) de pacientes clínicos. Las preguntas abiertas buscaban determinar la extensión de los conocimientos, la motivación, y los obstáculos a los cambios en el estilo de vida para el control de la diabetes mellitus (DM) en adultos jamaicanos. Estas fueron codificadas en forma de temas, y descritas. Otros datos fueron analizados usando el paquete estadístico SPSS. Los hombres (61.8 ±14.8 años) fueron mayores que las mujeres (54.9 ± 13.7 años) y demostraron menos conocimientos (p = 0.006). Los respondientes (71%) indicaron la necesidad de más educación. Los obstáculos a los cambios en el estilo de vida y el control glicémico, incluyeron un bajo nivel educacional (64%), conocimientos inadecuados (80%), falta de percepción de riesgos (80.4%) y falta de auto-monitoreo (93%). Sólo el 23% se mantenían bajo un control de HbA1c # 6.5%. La referencia de los pacientes a los médicos como fuente primaria de información indicó la necesidad de un enfoque colaborativo en equipo, y de la incorporación de la educación para la diabetes como un servicio indispensable en esta clínica.

Self-care, compliance and glycaemic control in Jamaican adults with diabetes mellitus / Autocuidado, cumplimiento y control glicémico en los adultos jamaicanos con diabetes mellitus

Appropriate self-care practices, including nutrition and medication compliance, are essential to satisfactory control of diabetes mellitus (DM). This descriptive study assesses self-care practices, and their relationships to glycaemic control in adults with DM in Jamaica. A pre-tested structured interview and anthropometric measurements were carried out on 98 women and 35 men, randomly selected from a population (n = 510) of adult clinic patients. HbA1c was used as the index of glycaemic control. Self-care practice scores indicated the extent of compliance with appropriate lifestyle practices. Data were analyzed using the Statistical Package for the Social Sciences (SPSS). Men (median age, 62 years) were significantly older (z = -2.64, p = 0.008) than the women (55 years). The median duration of DM was: men, seven years; women: 10.5 years. Sixty-nine per cent were being treated with insulin. Only 45reported full compliance with medications. Their median body mass index (BMI) was 29.1, (16.6-47.4) kg/m2. Eighty-one per cent were overweight or obese. Forty-six per cent described diet and/or obesity as contributing to their diabetes. Eighty-five per cent had consulted a dietitian but only 56.4reported being on a [quot ]special diet[quot ]. Only 16.5reported not taking any sugar. Self-care scores were inversely related to HbA1c(p = 0.008), BMI (p = 0.001), sugar intake (p = 0.005) and were lowest in the area of weight control and exercise. Only 23had blood glucose controlled to HbA1c < or = 6.5. In women, HbA1clevels were inversely related to compliance with medication (p = 0.004). Glycaemic control in adults with diabetes mellitus is related to their self-care practices, especially weight control, exercise and medication compliance.

Las prácticas apropiadas de autocuidado, incluyendo cumplir con los requerimientos de la nutrición y la medicación, son esenciales para el control satisfactorio de la diabetes mellitus (DM). Este estudio descriptivo evalúa las prácticas de autocuidado, y sus relaciones con el control glicémico en adultos con DM en Jamaica. Una entrevista estructurada, previamente probada, así como mediciones antropométricas, fueron llevadas a cabo en 98 mujeres y 35 hombres, seleccionados aleatoriamente de una población (n = 510) de pacientes de una clínica de adultos. La prueba HbA1c se usó como índice de control glicémico. Las puntuaciones de la práctica de autocontrol indicaron el grado de conformidad con prácticas de estilo de vida apropiadas. Los datos fueron analizados utilizando el denominado Paquete Estadístico para la Ciencias Sociales (SPSS). Los hombres (edad mediana, 62 años) eran significativamente mayores (z = -2.64, p = 0.008) que las mujeres (55 años). La duración mediana de la DM fue como sigue: los hombres, siete años; las mujeres 10.5 años. El sesenta y nueve por ciento fue tratado con insulina. Sólo el 45% reportó cumplimiento total con los medicamentos. El índice de la masa mediana de su cuerpo (BMI) fue 29.1 (16.6–47.4) kg/m. El ochenta y uno por ciento resultaró estar por encima del peso o ser obesos. El cuarenta y seis por ciento describió la dieta y/o la obesidad como factores que contribuían a su diabetes. El ochenta y cinco por ciento había consultado a un dietista, pero sólo el 56.4% reportó estar haciendo una "dieta especial". Sólo el 16.5% reportó no estar ingiriendo azúcar ninguna. Las puntuaciones de autocuidados se hallaron en proporción inversa al por ciento resultante de la prueba HbA1c% (p = 0.008), BMI (p = 0.001), ingestión de azúcar (p = 0.005) y fueron los más bajos en el área de control de peso y ejercicios. Sólo el 23% tenía la glucosa en sangre controlada en correspondencia con HbA1c # 6.5%. En las mujeres, los niveles de...

Autoantibodies, human T lymphotropic virus type 1 and type 1 diabetes mellitus in Jamaicans

The clinical characteristics, autoantibody profiles and seroprevalence of human T lymphotropic virus Type 1 (HTLV-1) were assessed in 30 Jamaican patients with Type 1 diabetes mellitus. Two hundred and fifty-two blood donors and 108 patients with Graves' disease were included as controls for the HTLV-1 component of the study. The mean age of onset of diabetes mellitus was 20.5 +/- 9.2 years and the mean duration of diabetes mellitus was 10.5 +/- 6.1 years. The remarkable clinical data included an absence of other associated organ-specific autoimmune diseases, and clinical evidence and history of congenital rubella in one patient. Islet cell cytoplasmic antibodies (ICA) were absent but 17 (5/30) of the diabetic patients tested positive for glutamic acid decarboxylase (GAD) antibodies. No other organ-specific autoantibodies were detected but non-organ-specific autoantibodies were present in 9 (30) of the sera of diabetic patients. The seroprevalence of HTLV-1 in the patients with diabetes mellitus was significantly higher than that in the healthy controls (17 (5/30) versus 4 (11/252), p = 0.05). Autoantibodies were found in the sera of 4/5 (80) of the diabetic patients who were positive for HTLV-1. None of the patients with onset of diabetes mellitus below age 15 years was HTLV-1 positive. The likely polyaetiological nature of Type 1 diabetes mellitus in Jamaicans is being further investigated at the molecular level.

A clinico-pathological study of Cushing's syndrome at the University Hospital of the West Indies and a review of the literature

Cushing's syndrome is an uncommon but important disease. Twenty-one confirmed cases of spontaneous Cushing's syndrome were documented at the University Hospital of the West Indies over a 21-year period. They were predominantly young females (F:M ratio of 17:4; mean age 25 years and 3 months). The commonest presenting symptoms were amenorrhoea (41) and obesity (19). Common clinical features were cushingnoid features (95), hypertension (76) and hirsutism (82). Twenty-nine per cent had frank hyperglycaemia. Cushing's syndrome was due to Cushing's disease in 10 cases, adrenal adenoma in 3 and adrenal carcinoma in 2 cases. In 4 cases with presumed adrenal hyperplasia, the histology was either unavailable or was not consistent with the diagnosis. Two cases appear now to have had the ectopic ACTH Syndrome. Adrenalectomy was the commonest treatment offered. There were no intra-operative or post-operative deaths but recurrence was common after subtotal adrenalectomy in Cushing's disease. Twenty-seven per cent of the patients developed Nelson's syndrome, which was fatal in 50. Long-term hormone replacement therapy was unnecessary after surgery for adrenal adenomas. Treatment of Cushing's syndrome was well tolerated by the patients.

The medical management of diabetes mellitus with particular reference to the lower extremity: the Jamaican experience

Predisposing factors for the diabetic foot include peripheral neuropathy, peripheral vascular disease (PVD), hyperglycaemia and increased duration of diabetes. From the records of patients admitted to the University Hospital of the West Indies with the diabetic foot, we reviewed the results of the microbiology of wound swabs from diabetic foot ulcers. We noted the high prevalence of P VD (66.6), peripheral neuropathy (50), hyperglycaemia (75.6) and increased duration of diabetes (17.5 years). A history of past foot ulcers was common and 87.2had polymicrobial infection. The commonest organisms were gram positive organisms which were usually sensitive to the 2 antibiotic regimes that were commonly used. Euglycaemia, a favourable lipid profile, control of blood pressure, yearly foot examination and institution of measures to prevent foot trauma are important in the prevention of foot ulceration.

The efficacy of acarbose in type 2 diabetes mellitus in Jamaica

The efficacy and tolerability of acarbose was studied in type 2 diabetic patients eating a typical Jamaican diet. The study was an open label parallel group study without placebo control. Of the 51 subjects recruited, five (9.8) did not complete the study and were excluded from further analysis. Six (13) of the remaining 46 had adverse side effects and did not complete the protocol. Of the remaining 40 (Gp A), acarbose was added to their previous regime of diet alone (n = 15), [Gp B], oral hypoglycaemic agents, OHAs (n = 17), [Gp C], or insulin (n = 8), Gp D]. In addition, during the run-in period all subjects had one session each with a dietitian and a diabetes educator. Over a 3-month period, significant reductions in average glucose (mmol) were observed in Gp B 10.5 +/- 1.1 to 8.4 +/- 0.9 (p < 0.027) and, from 11.0 +/- 1.0 to 8.7 +/- 0.7 (p < 0.01) in Gp C. Similarly, total glycosylated haemoglobin fell from 14.8 +/- 1.1 to 12.2 +/- 1.0 (p < 0.016) in Gp B, from 14.9 +/- 1.1 to 11.9 +/- 1.1 (p < 0.002) in Gp C, and from 14.1 +/- 1.4 to 11.8 +/- 1.4 (p < 0.02) in Gp D. Twenty-three per cent (23) of the patients experienced flatulence; 7.5, changes in bowel habits and 5, abdominal cramps and discomfort. Acarbose is effective as monotherapy and as combination therapy with oral hypoglycaemic agents or insulin. Side effects were common, but tolerable.

The influence of persistent hyperglycaemia on hyperfibrinogenaemia and hyperviscosity in diabetes mellitus

The effect of hyperglycaemia on hyperfibrinogenaemia and its consequence on plasma viscosity was investigated in 69 diabetic patients during the course of hypoglycaemic treatment. Glycaemic control was assessed by measurement of glycosylated haemoglobin (HbA1). Plasma fibrinogen concentration (PFC) was determined by a clot-weight method. The relative plasma viscosity (RPV) was measured by capillary viscometry. The mean PFC and RPV were significantly (p < 0.001) elevated in the diabetic patients as compared with a non-diabetic control group. Both PFC and RPV showed a distinct, step-wise increase with progressively poorer glycaemic control. The data strongly indicate that persistent hyperglycaemia is associated with a frank hyperfibrinogenaemia and hyperviscous plasma in most of the diabetic patients studied. These abnormal haemorrheological changes could impact adversely on both the haemostatic process and circulation in diabetic patients.

The ectopic ACTH syndrome and superior vena cava obstruction due to a malignant carcinoid tumour of the thymus

We report the case of a 28-year-old African Caribbean woman with Cushing's syndrome and superior vena cava obstruction secondary to an ACTH-secreting carcinoid tumour of the thymus. The case highlights the problems which may be encountered in performing the 2-day high dose dexamethasone suppression test but clinicians are reminded that this test or any other dynamic test is absolutely essential for elucidating the cause of ACTH-dependent Cushing's Syndrome.